Permutation lock



F. m BELLA.

PERMUTATION LOCK. APPLICATION men MAY 9, I921. 1,41 3,393. nted Apr. 18, 1922.

v a SHEETS-SHEET 1. Il

wane/o0 F. DI BELLA.

PERMUTATION LOCK.

APPLICATION FILED MAY 9, 192].

1,41 3,393. I Patented Apr. 18,1922.

3 SHEETS-SHEET 2.

i *fi- F. DI BELLA.

PERMUTATION LOCK.

APPLICATION men MAY 9, 192].

Patented Apr. 18, 1922'.

3 SHEETS-SHEET 3.

' V mutation lock and one Object of the -inven FRANK n1 BELLA, on NEW YORK, 1v. Y.

State of New York, have inv'ented certain new and useful Improvements in Permutation Locks; and I do deelarethefollowing to be tull clear and exact 'de'scriptiojn of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, This invention relates to an improved pertion is to provide a permutation loek'having' improved tumbler mechanism and -havlng animproved bolt and operating means for the bolt actuated through, themedium of :1 shaft associated with the tumbler mechanism. V V v v Another object of the invention is' to so construct this lockthat the shaft forimparting movement to the bolt may be rotated and move riithjit bore oi? the; bolt when the main body of the bolt is locked against movement. V Another object'of'the invention to provide the bolt with improved means for guiding its sliding movement, this means consisting of arms one of which may beengaged to releasably lock the bolt against sliding movement. I

Another object or" theinvention is to provide an improved type offlocking block for preventing sliding movement of the bolt,the' locking block being yieldably held in engagement with the tumblers of the permutation mechanism and moving toa position permitting slidingof the bolt when the turn blers are in the proper position. I

Another object ofthe invention is to provide improved means foryconnecting eecentric wheel or disk with thenctuating shaft. the disk when in use being positioned within a band loosely connected with the core of the bolt. 7 i p Another object of the invention is to pro vide an improved means for mounting the tumblers of the permutation mechanism within the housing of theflock and to also provide improved operating means for the tumblers. i I 7 Another object of the invention is toprovide an improved socket for use in connec Specification of Letters Patent.

PERIMUTATION 00K.

tion. with the lock, the'socket beingso g con structed that a slidingplate forming'part.

of the socket may be moved to Patented Apr. 18,1922. .lppncatioameafmty seria1No.468,00a. 7

an inoperae tive position and releasably held inthe 'inoperative position against the actiongof a spring normally erative positionf I V. Another object of the inventionj is to ro vide an improved latch which may .be permitted to engage the sliding plate-and which may be. moved in a releasing position to permit closing of the I closed and the latch is engaged by the bolt' extended in the operativepo'sition.

Another object iolding the plate inan op-j circumstances closingof the bolt extended Will not serve sliding plate of the socket.

- Another object of the invention is to so construct this lock thatwhile it maybe 7 Y foran unauthorized person to set.

easily set by an'authorized person, it'will be diflicult I the combination and open the lock. This invention is illustrated in the accompanying drawings,whereinz V V Figure 1 is a view'showing the lock in elevation with the cover plate of the body portion ofthe lock removed.

Figure 2 is a longitudinalsectional view through the lock taken along the, line 2-2 socket in elevation with the sliding plate moved to an open-position, o v Figure 6 is a longitudinalsectional view takenalong the line 6 6 of Fig. 5, Withthe sliding plate locked in an openposition and the bolt-operated latch inoperative. Figure 7 is 'aview similar to Fig. shoW-" ing the bolt-operated latch in" an operative position.-v f Figure 8 is a' transverse sectionalfvie'w through Fig.1. l .Figure 9 is a transverse sectionalflview taken along the line 9+9 of Fig. 1 f

Figure 10. is a perspective view of the plate .when the, door 'is of the invention is torso construct this socket that under ordinary" door with the .to'release the V the lock taken along the line 88 of Figure 5 is a view showing the doorjam latching block which engages the permutation tumblers.

Figure 11 is a group view showing in perspective the permutation mechanism.

Figure 12 is a perspective view of one of the clamps which serve to rotatably mount the permutation tumblers.

Figure 13 is a group view showing in perspective the elementsof the locking bolt and actuating disk which fits into a collar of the bolt mechanism.

Figure 14 is a perspective view of a clamp which holds the tumbler-engaging bolt slidaloly in place and also assists in controlling movement of one of the arms of the bolt mechanism.

This improved permutation lock is provided with a housing 1 which will be secured to the door .2 by securing screws 3 and is providedwith a tubular neck extension 4: which extends through the door as shown in Fig. 2. A cover plate 5 is provided for this housing 1 and is removably held in place'by securing screws which pass through openings formed in the cover and are screwed into threaded sockets 6 and 7 formed in the housing. The cover plate 5 is provided with a socket extension 8 which will be positioned in alinement with the neck extension 4 when the cover plate is connected wit-h the housing 1 and will receive one end portion of the hollow shaft 9 upon the outer end of which will be secured a head 10 by means of which the shaft may be easily rotated.

The hollow shaft 9 forms a portion of the permutation mechanism disclosed in i Fig. 11 and when in place has its head 10 seated in the head 11 of the dial 12. This dial 12 fits into the cup 13 which is secured to the outer face of the door by securing screws 14 covered by the dial 12. A sleeve 15 extends inwardly from this dial into the neck 4 of the housing 1 and is providedat its inner end with spaced arms 16 between which will fit the spared 17 which extend from the hollow neck 18 of the permutation tumbler 19. It will thus be seen that when the arms 16 are positioned between the arms 17, there will be provided a hollow shaft .between the dial 12 and the tumbler 19. Other tumblers 20 and 21 fit about the hollow shaft between the tumbler 19 and dial 12 and will be positioned in the housing 1 and be rotatably mounted and held in the proper spaced relation by means of clamps 22'one of which is shown in perspective in Fig. 12. These clamps are pivotally mounted by fasteners 23 which pass through the openings 24 and after being swung into the clamping position shown.

in Figs. 1 and 2 reposition the tumblers 19, 20 and 21 in the-seats 25, 26 and 27. will I be releasably secured by screws or other removable fasteners 28 which will pass the permutation lock to be changed when desired.

The bolt 33 is slidably mounted in the housing for moving outwardly through a cut out in the end wall of the housing between the blocks 34 which in addition to I serving as guides for the bolt, provide supports so that a cross bridge 35 may be secured across the bolt and held in place by securing screws which extend through openings in the bridge and are screwed into threaded openings 34' formed in the blocks 84. By this arrangement, the bolt 33 will be slidably held in place and may not move out of the proper position. This bolt 33 is hollow thus providing a chamber 36 in which a core 37 will be slidably mounted and yieldably held against sliding movement by means of a clutch consisting of spring 38 positioned in a passage 39 "of the core and gripping balls to pressed outwardly by the spring 38 and thus held in firm engagement with the walls of the pocket. An opening 35 is formed in the bridge for registering with an opening 41 in the bolt and permitting the bolt to be securely locked by means of latch mechanism to be hereinafter described. This bolt 33 is provided wit-h side arms 12 and 4?). one of which is provided with a longitudinally extending slot 44 to -receive a securing screw 45 and the second of which is provided with a depending finger 4:6 for fitting into a groove 47 formed in a rib t? upon the bottom of the housing. lVhen the lock is in use, it is desired to have the bolt slide longitudinally and in order to do so, t iere has been provided an eccentric ring 48 which is mounted upon the tubular shaft 9 within a circular band 4L9 from which extends an ear 19 loosely connected with the core 37. A pin'51 extends through open ings formed in the neck 52 of the ring and through a set of openings in the hollow shaft 9 so that when the shaft is turned, the eccentric will be moved and thus through the medium of the band sliding movement imparted to the core. normal circumstances, the core will be frictionally held against movement in the pocket and therefore the bolt will move with the core but when the bolt is held against sliding movement,' the core may slide in the pocketand thus prevent breakage of the look. In order to prevent the pin from being accidentally caused to slip out of the openings of the neck 52 and the shaft 9, the pin has been provided with an eye 53 through which a securing screw 54 will be passed and screwed into a threaded opening formed in thering 48. It will thus be seen that the eccentric ring 48 will be securely but releasably' locked upon the shaft V 1 In order to permit the bolt to be locked against sliding movement when desired,

there has been provided an "abutment block 55 which is positioned between the side wall of the housing and the permutation 'tur blers and extends between theend' portions of the clamps so that the block will beheld in engagement with the edges-of the tumbler disk by means of a spring 56 which engages the wall of the housing and the outer end of the block 55. This block is provided with a transversely extending passage 57 through which the arm 43 of the boltinay pass and the block is slidablyjheld'inthe proper position by means of a housing-or clamping bracket 58 which is secured to the bottom of thehousing 1 by fasteners which pass through the 'side'wings '59 of this clamp. The side walls of this clamp are providedwith cutouts 60' so that the arm may pass through the housing as well as through the passage57 otthe block 55. hen the block is in the position shown in Fig. 4, the arm 43 can'pas'sthrough the passage 57 but when the tumbers are turned out of the set position in whichthe end of the bolt will rest in the notches 30 a'ndw'ill engage the uncut edge portions of these tumbler disks, theblock will be moved outwardl 'ap'ainstthei action of the sprin 56 o v v l b;

and h P ssag'c 57 will thus be moved/out of'registry -with the recesses (30 therebycaus: 7 ing the arm to strike the side ace of the turningit, so that its side pin 64 will engage the outerendv of the socket 62 the pin will.

be held inan inoperative position-thus permitting-the bolt to be moved inwardly when the combination is properlyset g A socket is to be connected with the doo jamb. This socket which is to-be secured to the door iamb and receivetheb0lt38 is provided with a body portion 65' which-will be connected with thedoorjamb bynieans'of screws or other similar ;ttasteners, This body portion is providedjwith apocket 66' and is provided with a sliding plate 6? forming an outer wall section for: the pocket. j An arm 68 extends from the major portionof the body in'wlnch'the pocket 66 is. formed and is cut to provide a tongue 69 which will extend into a shallow recess 70 7 formed in the plate 67',;when this plate is moved to'fan open position beneath the tongueas shown in Fig.- 5. A pm 71 15 positioned withln the interior of this arm 68 and carries aspiring 72 which engages a tongue extension 7 3 which extends inwardly from :the plate 67 so that ordinarily the platewill he held'in the closed position.

The head "oflthis pin will'however' limit movement of the plate under action of the spring and therefore the plate cannot move towards a closed positionb eyond the position shown inFig. :1: Anartuating pi'n' 74 extends from this plate so that the platecan .be readilymoved to an open position. i ltfis desiredto permit the plate to be releasably locked in an opencor a closed position-and thereforethere has? been provided a locking pin 75' which .is' slidably mounted in aneck 7 6 of the tongue '69 and engaged by a spring 77' so'that thefpin will be yieldably held in? a position to extend through either thejopew;

ingf'78 or'the opening 79 according." to"v Whether the plate :lS'lI'l a closedor an open 'position. In. order to the plateto' I bereleasably'hel d 'inwan open position and permit it to move to a closed'position when the bolt has been turned to an extended position and the door closed, thereqhasfibeen provideda latching plate'80 which issloosely mounted in the bottom of thepock-et' 66 and I engaged "by a spring 81 which will: tend to f move the plate and extend Ethe'tongue 82' thereof upwardly to the position shown, in

Fig 7. When the-plate is moved: to anopen position and held in: this 75, the plate willlextend slightly across the end ofthe tongue 822s shown in Fig. 6 and. 5

the tongue will thus be prevente'dftrompres venting closing of the plate; VVheirhowever it is desired. to have this plate held open by the tongue of the'plate, thexpin 75 will be drawn 'outwardly and :the plate moved'toward 'lan openfgposi'tion -a small amount so that it assumes the position 'shown' iriFig.

position by tlie pin with the tongue '82 extending in front of and engaging the edge of the platee-The door ca'n'thenbe c'losed'with the locking bolt I r extended to the operative positionandzwhen this'loc'kin'g bolt strikes the plate 80, itwill move this plate inwardly andthusmove the i 1 tongue '81 atroni-in-"trent the plate r67, The: spring i will then move the plate; 67 to the closed-position andthe door cannotbe unlocked .until' the proper combination" is set to permit the bolt to-be moved inwardly;

WVhenfthis lock is in use, the socketi -willbe' secured'to the 'door'j amb and {the housingot the lock will besecured-ctothe'doorzvviththe neck 4 extending through an opening formed in the door. The cup 13 can then be secured to the door and after the cup is in place, the dial put in place with the hollow shaft section carried by the dial extending inwardly with its arms extending between the arms 17. After the dial is in place. the hollow shaft- 9 will be passed through the hollow sectional shafts of the permutation mechanism and the securing pin 51 put in place and secured by the screw 54. The cover plate 5 of the housing will then be put in place and secured by the screws and the lock is ready for use. hen the combination is scattered, the hollow shaft 9 maybe turned by means of its operating head 10 and movement will be imparted to the core and the core will have. sliding movement. The block will however prevent the arm 13 from passing through the bracket which holds the block in place and therefore the bolt cannot move inwardly to the inoperative position. Therefore, there will be no danger of the lock being broken by forced turning of the shaft- 9 with the con1- bination scattered. in order to set the combination. the dial is turned first in one direction and then in another until the turnblers have been moved to bring the notches into alinement so that the spring can move the block to bring the passage 57 into registry with the cutout 60 and permit free passage of the arm In the present illustration, the dial will first be turned to the right by means of the knob 11 until the member 35 is in position with respect to the mark 83 upon the cup'13. The dial will then be rotated in the opposite direction for two revolutions to bring the number 1 1 into proper position with respect to the mark 83. In doing so, the screw 32 of the tumbler disk 19 will have engaged the co-operating screw 32 of the disk 20 and cause this disk 20 to rotate with the disk 19 until the second screw of this disk engages the screw 32 of the disk 21 and moves this disk 21to the set position at During the reverse movement to the point 14, the screw 32 of the disk 19 will first move out of engagement with the co-operating screw of the disk 20 and after a revolution will again engage this screw and turn the disk 20 to bring its notch into proper posit-ion with respect to the notch of. the disk 21. After the disks 21 and 20 have been set, the dial will again be turned toward the right or in other words in the first direction of movement and brought to a stop at the mark 29 in which position all of the notches of the disks will be in alinement and the block 55 may move to the position of Fig. 4. With the block in this position, the arm 43 may pass through the notch 57 The head of knob 10 can then be turned to rotate the shaft 9 and the bolt 33 will be drawn inwardly and thus permit the door to be opened. The combination can then be left .in the set position so that the bolt can be moved inwardly or outwardly at will or the bolt can be moved outwardly and the combination scattered so that it will be locked in the extended position. If this is done, the plate 67 will be moved to the open posit-ion and the door can be opened or closed as long as the plate is secured in the open position. If during the day, it is desired to positively lock the door from the inside and prevent anyone from opening it from the outside, the door may be closed and the plate released so that it may move to the closed position. The locking pin 61 which would ordinarily be held in a raised or inoperative position will be-turned so that it may move to a looking position and will extend down into the opening of the bolt 33 thus preventing anyone from drawing the bolt. inwardly to the inoperative position even with the combination set. hen leaving theroom and it is desired to have the door locked, the plate will be moved to the position shown in Fig. 7 with the tongue 82 engaging the edge of the plate. The door can then beclosed and when the extended bolt strikes the plate 80, the tongue will be moved inwardly out of engagement with the plate 67 and the spring 72 will move the plate to the closed position thus preventing opening of the door until the combination is again set to draw the bolt inwardly to the inoperative position. It will thus be seen that there has been provided a lock which can be securely locked and which is so constructed that the permutation locking mechanism cannot be broken by turning of the head 10 with the combination scattered. It will be further noted that a lock has been provided which is so constructed that the bolt may be very securely held in a locked position but very. easily moved to an inoperative position with the proper combination set. It will be fun they noted that there has been provided a very efficient permutation mechanism for releasably holding the bolt in a locked position and also that there has been provided means which will permit of the bolt being locked against movement to an inoperative position even with the combination set. This latching mechanism would be very effective in locking the door against intruders where the occupant of the room did not have time to scatter the combination. It will be further noted that there has been provided an improved type of socket for use in connection with the lock, the socket being provided with mechanism depending for its operation by co-operation with the bolt of the lock mounted upon the door.

I claim:

1. A look comprising a door engaging housing, a jamb engaging socket including a wall section movable to an open position and yieldably held in a closed position, jlatch means for releasably-holding the'wallfseotion in an open position, a boltcarrie d bythe door engaging housing and movable into and out of an operative position, means for across and rendering the first mentioned latch means inoperative.

3. A lock comprising a door jamb engaging socket having a wall section slidably mounted for movement into and out of a closed position, resilient means yieldably holding h the Wall section in a closed position, latching means within the socket yieldably held in position to engage the Wall section and hold the same in an open position, a door engag ing housing, a bolt movable into and out of the housing, locking means in the housing for locking the plunger in an extended position for entering said socket when a' door is closed 7 and engaging the latching means therein to move the same and release the wall section to perrnitthc wall section to move to a closed position and prevent movement of the bolt out of the socket while lockedin an extended position, and additional means forlocking the wall section in an open position and preventing its movement to a closed'position, the last mentioned locking means further serving as means for locking the wall section in a closed position. V

4. A lock comprising a housing. a bolt carried by the housing for sliding movement into and out of an operativeextended position, a core slidably mounted in the bolt and having frictional binding engagement with the bolt. operating means having connection with said core for moving the core and thereby imparting movement to the bolt, and means for locking the bolt in an extended position,the core being permitted of movement when the bolt is locked.

5. A lock comprising a housing, a bolt slidably carried by the housing for movement into and out of anoperative position, means for releasably locking the bolt in an operative positioma core slidab'ly mounted in the bolt and having frictional engagement with the bolt permitting movement of the core independent of the bolt when the plunger is locked in an operative position,

' and means for imparting movement to the core. r r

6. The structure of claim 5, having the core slidably mounted in :a pocket of the ment of bolt and provided with transversely extendinw passage, 'a'spring- -infthe passage an dgrip ping ballsin the ends of the pas-' V i sageengaged by the spring and held in tight engagement with'the walls of the pocket, the walls o f-the pocket being provided with recesses receiving the balls to 'frictionally lock the core against movement in the pocket of the. bolt. p

7..The' structure of claim 5, having the means for imparting movement to the core consisting of a rotatable shaft, an eccentric ring carried by said shaft, and a band 'fitting upon said ring and'having a radiallyrex tending ear pivotallyconnecte'd with the core whereby rotation of the shaft in either direction will impart jsliding movement to the core and bolt. Y I V 8. The structure of claim 5, having the bolt provi'dedwith side arms extending longitudinally of the'housing, one of the arms aving a finger extension fitting into a groove in the housing and the second having a slot receiving a pin for limiting and guid} ing sliding movement of the bolt, the lockthe bolt against sliding movement. 7 1

9. The structure of claim 5, having the bolt provided with-side arms guiding and limiting sliding inovementof the bolt,the locking means for the bolt consisting of a slidably mounted block spring held in position to permit movement of'the plunger through engagement of the block by one of the arms of the bolt, and means for moving the block into a position for blocking movethe bolt inwardly to an inoperative position. V

' 10. The structure of claim 5, having'the bolt, provided with'side arms guiding-and limiting sliding movement of thebolt, the

locking means for the bolt consisting of a slidably mounted block spring held in po= sition to permit movement of the bolt,- through engagement of the block by'one of the arms ofthe bolt. 'a rotatable setting mg means engagingone of the arms to hold 7 shaft, and tumbler disks carried by the shaft and-having theirperipheral edges engaging. the block to hold the block in a position blocking movement 7 of the bolt arm, the

disks being provided with notches ,permitting movement of the block to an arm releasing positionewhenthe notches are in alinement. 7 p I 1 11. A lock comprisinga housing, a bolt slidable into and out of the housing, means. for locking the bolt in an extended position comprising a sliding I block blocking inward movement of the bolt when moved out of a normal position, a hollow shaft extending into the housing and havingouterand i inner end sections provided with. interlockmg arms, a dial and turning'head carried by the outer section, a tumbler disk rigid r with the inner section, other disks looseupon the inner section, abutment pins fittending through the hollow shaft, on eccenting into selected openings in the disks and trio disk upon the last mentioned shaft, and engaging to set the disks in, position permita band fitting loosely upon the disk and 10 ting movement of the block to an inoperahaving pivotal connection with the bolt. 5 tive position when the shaft is rotated to In testimony whereof I have hereunto set predetermined positions with respect to the my hand] dial, a rotatable bolt operating shaft ex- FRANK DI BELLA. 

